Novel crystallization aid adding and injecting device

Abstract

The utility model discloses a novel crystallization auxiliary agent adding and injecting device in the technical field of crystallization auxiliary agent adding, the novel crystallization auxiliary agent adding and injecting device comprises a solution pipe, a base, a Y-shaped machine body, a fixing column and a liquid conveying pipe, the base is connected to the interior of the solution pipe and communicates with the solution pipe, and the bottom of the Y-shaped machine body vertically communicates with the position over the base; one free end of the Y-shaped machine body is connected with a fixing column, the interior of the fixing column is hollow, the interior of the fixing column is connected with a pushing rod, the top end of the pushing rod is connected with a handle, the other free end of the Y-shaped machine body is a feeding port, and the feeding port is communicated with a liquid conveying pipe for conveying crystallization auxiliaries. Through regular operation of the injection process, scabs generated by the reaction of the crystallization assistant and the sodium aluminate solution are intervened in advance, so that online cleaning is realized, the interruption time of the crystallization assistant adding process is shortened, the continuous adding efficiency is improved, the influence on nucleation and granularity of aluminum hydroxide in a decomposition tank is reduced, and the field safety, cleanness and waste prevention effects are improved; and the safety risk and the labor intensity of workers are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization auxiliary agent addition, in particular to a novel crystallization auxiliary agent addition injection device. Background Art

[0002] In the alumina production process, crystallization additives (also known as CGMs) play a significant role in seed decomposition nucleation and particle size control, and are one of the key auxiliary means to improve the particle size and quality of seed decomposition products. When adding a crystallization aid into a plate heat exchanger pipe containing sodium aluminate solution, the crystallization aid reacts rapidly with the sodium aluminate solution, maintaining a long reaction time and forming small aluminum hydroxide crystals that continuously aggregate into a clog. Existing dosing devices are relatively simple, consisting of simply welding a section of pipe to the sodium aluminate solution pipe and connecting a ball valve. This approach presents significant limitations, as operators cannot predict when a pipe blockage will occur. A burst can only be discovered after the hose gradually increases pressure and the pipe bursts. This delayed discovery and treatment results in waste of crystallization aid and environmental risks. Upon discovering a burst, operators stop adding and address the blockage. At this point, they must carefully open the clogged ball valve and use relatively hard tools such as wire to clear the blockage with pressure and material. However, the moment the blockage is cleared, the solution splashes out, posing a significant safety risk and easily causing burns (from the lye solution) and other injuries (from slips and falls). Furthermore, addressing the issue takes a long time, resulting in interruptions in system addition and failure to meet required addition requirements, impacting nucleation and particle size control in the decomposition tank. Utility Model Content

[0003] The utility model aims to provide a novel crystallization aid adding and injecting device to solve the problem of interruption of addition of the crystallization aid caused by blockage during the transportation process.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a new crystallization aid adding and injecting device, comprising a solution tube, a base, a Y-shaped body, a fixed column and an infusion tube, wherein the base is connected to the inside of the solution tube and communicated with the solution tube, the bottom of the Y-shaped body is vertically connected directly above the base, one free end of the Y-shaped body is connected to the fixed column, the interior of the fixed column is hollowed out, a push rod is connected to the inside of the fixed column, the top of the push rod is connected to a handle, the other free end of the Y-shaped body is a feed port, and the feed port is communicated with the infusion tube for conveying the crystallization aid.

[0005] The working principle of the utility model is as follows: sodium aluminate solution flows in the solution tube, and at this time, the handle is rotated to move the push rod upward. At this time, the infusion tube is controlled to inject the crystallization auxiliary agent, and the agent quickly enters the sodium aluminate solution tube from the feed port and the base, realizing the injection process of the crystallization auxiliary agent. After the injection is completed, the handle is rotated in the opposite direction to move the push rod downward. During the downward movement, the bottom of the push rod cleans the fine alumina crystals adhered to the Y-shaped pipe, and after cleaning, the crystals are sent into the sodium aluminate solution tube through the base.

[0006] The beneficial effects of the present invention are as follows: 1. The reagent is normally conveyed through the feed port of the Y-shaped body, and the handle is switched on and off regularly. The push rod pushes away the fine alumina crystals attached to the Y-shaped body and the base, thereby realizing online cleaning of scale, thereby reducing waste caused by pipe bursts and leakages of crystallization aids, and avoiding the safety risk of high-temperature and high-pressure sodium aluminate solution piercing the material and injuring people during the pipeline blockage disposal process; 2. It solves the problem of interruption of addition of crystallization aids caused by blockage and other faults, which leads to inability to add them continuously, and provides a basis for early prediction of process parameter adjustments such as seed decomposition and nucleation control and particle size regulation, which is of great significance to stable production process operation control.

[0007] Furthermore, the infusion tube includes a conversion joint, a connecting ball valve, a connecting tube, a check valve, and a quick connector. The conversion joint is connected to the feed port, which is connected to the connecting ball valve, which is connected to the connecting tube, which is connected to the check valve, which is connected to the quick connector. The quick connector is connected to a hose, which is connected to the crystallization aid tank. The connection ball valve and check valve allow the delivery tube to be quickly closed, preventing large-scale loss and waste of materials and achieving energy conservation.

[0008] Furthermore, the connecting pipe is connected to a pressure gauge. Through the provision of the pressure gauge, the pressure situation in the delivery pipe can be observed at any time during operation.

[0009] Furthermore, a fixing assembly is connected between the fixing column and the Y-shaped body. The fixing assembly includes a fixing plate and a plurality of connecting columns. The fixing plate is connected to the Y-shaped body. The bottom end of the fixing column is connected to the fixing plate via a plurality of connecting columns. A stabilizing plate is connected between the connecting column and the fixing plate. The push rod passes through the fixing column, the fixing plate, and the Y-shaped body in sequence from top to bottom and is located at the inner bottom of the Y-shaped body. By using the fixing plate and the connecting columns, the fixing column and the Y-shaped body are connected at intervals, so that the surface condition of the push rod can be observed during operation to determine whether there is leakage in the Y-shaped body. At the same time, it avoids the completely sealed fixing column. The crystallization aid flows into the gap between the push rod and the fixed column during injection, and finally becomes small crystals that hinder the operation of the push rod.

[0010] Furthermore, a clamping ring is provided at the top of the fixing post, a gland is connected to the top of the fixing plate, and the push rod passes through the gland and is located within the Y-shaped body. The clamping ring provides a more stable connection between the push rod and the fixing post, and the gland ensures a tight fit between the Y-shaped body and the push rod, preventing leakage.

[0011] Furthermore, the push rod is connected to a push block at its bottom, with sealing pads at its upper and lower ends. The diameter of the push rod is smaller than that of the push block. By setting the push block and the push rod to different diameters, the push rod can be limited in movement, preventing the push rod from completely separating from the Y-shaped fuselage.

[0012] Furthermore, the base is conical, and the diameter of the base is larger than the diameter of the bottom of the Y-shaped body. By setting the base and the Y-shaped body with different diameters, the base can be more firmly connected to the solution tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a novel crystallization aid adding and injecting device of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the Y-shaped fuselage and its connecting parts;

[0015] Figure 3 for Figure 1 Front view of the middle Y-shaped fuselage and its connecting parts;

[0016] Figure 4 for Figure 1 Left side view of the middle Y-shaped fuselage and its connecting parts;

[0017] Figure 5 for Figure 1 A top view of the Y-shaped fuselage and its connecting parts. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The figure marks in the drawings of the specification include: base 1, Y-shaped body 2, fixing assembly 3, fixing plate 301, connecting column 302, stabilizing plate 303, bolt 304, pressure cover 305, fixing column 4, fixing sleeve 401, push rod 5, push block 501, sealing gasket 502, handle 6, pressure gauge 7, quick connector 8, hose 801, check valve 9, connecting pipe 10, connecting ball valve 11, conversion joint 12, feed port 13, solution tube 14.

[0020] The embodiment is basically as shown in the attached Figure 1 -Attached Figure 5As shown: A new crystallization aid addition and injection device includes a solution tube 14, a base 1, a Y-shaped body 2, a fixed column 4, a fixed component 3 and an infusion tube. The base 1 is conical, and the diameter of the base 1 is larger than the diameter of the bottom of the Y-shaped body 2. The base 1 is fixedly connected to the inside of the solution tube 14 and is connected to the solution tube 14. The bottom of the Y-shaped body 2 is vertically connected to the top of the base 1. The left free end of the Y-shaped body 2 is vertically upward. The top of the left free end of the Y-shaped body 2 is fixedly connected to the fixed component 3. The fixed component 3 includes a fixed plate 301 and two connecting columns 302. The fixed plate 301 is fixedly connected to the Y-shaped body 2. The center of the top of the fixed plate 301 is fixedly connected to a pressure cap 305. The top of the fixed column 4 is fixedly connected to a fixed sleeve 401. The bottom end of the fixing column 4 is fixedly connected to the fixing plate 301 through two connecting columns 302, and a stabilizing plate 303 is fixedly connected between the connecting column 302 and the fixing plate 301. The stabilizing plate 303 and the fixing column 4 are connected by bolts 304. The inner wall of the fixing column 4 is provided with a thread, and the top of the fixing column 4 is provided with a clamping ring. The internal thread of the fixing column 4 is connected to a push rod 5, and the push rod 5 passes through the clamping ring, the fixing column 4, the fixing plate 301, the pressure cover 305 and the Y-shaped fuselage 2 from top to bottom in sequence. It is located at the inner bottom of the Y-shaped fuselage 2, and the top of the push rod 5 is fixedly connected to the horizontal handle 6, and the bottom of the push rod 5 is fixedly connected to the push block 501. The upper and lower ends of the push block 501 are provided with sealing gaskets 502, and the diameter of the push rod is smaller than the diameter of the push block 501.

[0021] The infusion tube includes a conversion joint 12, a connecting ball valve 11, a connecting pipe 10, a check valve 9 and a quick connector 8. The conversion joint 12 is connected to the feed port 13. The conversion joint 12 is fixedly connected to the connecting ball valve 11. The connecting ball valve 11 is fixedly connected to the connecting pipe 10. The connecting pipe 10 is fixedly connected to the check valve 9. The connecting pipe 10 is fixedly connected to a pressure gauge 7. The check valve 9 is fixedly connected to the quick connector 8. The quick connector 8 is fixedly connected to a hose 801. The hose 801 is detachably connected to a crystallization aid box.

[0022] The specific implementation process is as follows: sodium aluminate solution flows in the solution tube 14. At this time, the handle 6 is turned to move the push rod 5 upward. At this time, the connecting ball valve 11 is controlled to inject the crystallization aid. At this time, the crystallization aid can enter the sodium aluminate solution tube 14 through the quick connector 8, the check valve 9, the connecting pipe 10, the connecting ball valve 11, the conversion joint 12, the feed port 13, and the base 1 to realize the injection process of the crystallization aid. After the injection is completed, the handle 6 is rotated in the opposite direction to move the push rod downward. During the downward movement, the sealing plugs at the bottom and top of the push rod clean the fine alumina crystals adhered to the Y-shaped pipe. After cleaning, the crystallization aid is sent into the sodium aluminate solution tube 14 through the base 1.

Claims

1. A new type of crystallization aid adding device, characterized by: It includes a solution tube, a base, a Y-shaped body, a fixed column and an infusion tube. The base is connected to the inside of the solution tube and communicated with the solution tube. The bottom of the Y-shaped body is vertically connected to the top of the base. One free end of the Y-shaped body is connected to the fixed column. The inside of the fixed column is hollow. A push rod is connected to the inside of the fixed column. The top of the push rod is connected to a handle. The other free end of the Y-shaped body is a feed port, which is communicated with an infusion tube for conveying a crystallization aid.

2. A novel crystallization aid adding and injecting device according to claim 1, characterized in that: The infusion tube includes a conversion joint, a connecting ball valve, a connecting pipe, a check valve and a quick joint. The conversion joint is connected to the feed port, the conversion joint is connected to the connecting ball valve, the connecting ball valve is connected to the connecting pipe, the connecting pipe is connected to the check valve, the check valve is connected to the quick joint, the quick joint is connected to a hose, and the hose is connected to the crystallization aid box.

3. A novel crystallization aid adding and injecting device according to claim 2, characterized in that: The connecting pipe is connected with a pressure gauge.

4. A novel crystallization aid adding and injecting device according to claim 3, characterized in that: A fixing assembly is connected between the fixing column and the Y-shaped fuselage, and the fixing assembly includes a fixing plate and multiple connecting columns. The fixing plate is connected to the Y-shaped fuselage, and the bottom end of the fixing column is connected to the fixing plate through multiple connecting columns. A stabilizing plate is connected between the connecting column and the fixing plate. The push rod passes through the fixing column, the fixing plate and the Y-shaped fuselage from top to bottom in sequence and is located at the inner bottom of the Y-shaped fuselage.

5. A novel crystallization aid adding and injecting device according to claim 4, characterized in that: A clamping ring is provided on the top of the fixing column, a pressure cover is connected to the top of the fixing plate, and a push rod passes through the pressure cover and is located in the Y-shaped body.

6. A novel crystallization aid adding and injecting device according to claim 5, characterized in that: The bottom of the pushing rod is connected with a pushing block, and sealing pads are provided at the upper and lower ends of the pushing block. The diameter of the pushing rod is smaller than the diameter of the pushing block.

7. A novel crystallization aid adding and injecting device according to claim 6, characterized in that: The base is conical, and the diameter of the base is larger than the diameter of the bottom of the Y-shaped fuselage.

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